Mill for grinding paints, enamels, inks, and other viscous materials



April 21, 1925. 115359052 5. SMITH MILL FOR GRINDING PAINTS, ENAMELS, INKS,

AND ER VISCOUS MATERIALS ed Nov. 17, 1922 2 Sheets-Sheet 1 Hall J/ Zhueyvfor April 21, 1925.

S. SMITH MILL FOR GRINDING PAINTS, ENAMELS, INKS,

AND OTHER VISCOUS MATERIALS Filed Nov. 17. 1922 2 Sheets-Sheet 2 ill Patented Apr. 21, 1925.

UNITED STATES PATENT OFFICE.

SIDNEY SMITH, OF MIDHUBST, ENGLAND.

MILL FOR GRINDING PAINTS, ENAMELS, INKS, AND OTHER VISCOUS MATERIALS.

Application filed November 17, 1922. Serial No. 601,606.

To all whom it may concern:

Be it known that I, SIDNEY SMITH, a subject of the King of England, residing at The Three Gables, Midhurst, in the county of Sussex, England, whost post-oflice address is The Three Gables, Midhurst, in the county of Sussex, England, have invented certain new and useful Improvements in Mills for Grinding Paints, Enamels, Inks, and Other Viscous Materials, of which the following is a specification.

This invention relates to mills for grinding paints, enamels, inks and other viscous materials.

Materials of the indicated kind have heretofore been ground between cylindrical rollers rotating in peripheral contact with each other, one of said rollers being also caused to reciprocate axially during rotation by suitable means.

According to the present invention the mill is composed of the ordinary rotating and axially reciprocating roller in contact with which is a toothed grinding block extending longitudinally of the roller and adjustably mounted in a frame and to or from the roller as required.

In the accompanying drawings,

Fig. 1 is a transverse vertical section of my improvedgrinding mill; and

Figs. 2 and 3 are respectivley plan and elevation of the toothed grinding block.

Fig. 4 is a front elevation of the grinding mill on an enlarged scale partly broken away.

In these drawings A is the frame of the machine, B B are stays therefor, C is the hopper and D is the ordinary-roller which is fixed on the shaft D on which the pulleys D and D are mounted. The roller D' is reciprocated axially during rotation by means of the inclined caps or blocks D 0ppositely disposed on the ends of the roller D and engaging stops A mounted on the frame A and adjustable thereon by the nuts A". E is the doctor or scraper of the roller.

F is a toothed grinding block muonted in a frame G secured to or formed integrally upon the outside of the hopper C. The block is loosely mounted on a screwed rod H engaging a nut G in the frame G and terminating in a wheel or other operating handle H, so that it may be adjusted for wear as required. The block is fixed relatively to the roller D with which it is normally in surface contact.

The block is adjusted laterally against the side of the frame G nearest to the hopper, to prevent the viscous material flowing from the hopper between the frame and block, by means of one or more screwed rods or bolts F secured to the block and passing through the outer side of the frame G and there secured by wing or other nuts F As will be seen by an inspection of Figs. 2 and 3 the teeth f are obliquely arranged on one face only of the block, that nearest to the roller, said face being preferably slightly concaved as shown in Fig. 1.

' I claim A mill for grinding paints, enamels, inks, and other viscous materials, comprising a frame, a hopper mounted thereon; a roller underlying the hopper and closing the delivery end thereof except at one edge thereof, and a grinding block carried by the hopper and extending downwardly toward and adjustable relative to the surface of the roller, said grinding block bearing on the roller immediately adjacent the delivery exit from the hopper to the roller to immediately act on any material leaving the hopper on the surface ofthe roller.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses this 6th day of November, 1922.

' SIDNEY SMITH. Witnesses;

B. GoLBY, N. F. WRIGHT. 

